München 2019 – wissenschaftliches Programm
P 18.98: Poster
Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax
Quantitative investigation of the neutron production in ASDEX Upgrade — •Monika Koleva, Giovanni Tardini, and the ASDEX Upgrade Team — Max-Planck-Institute for Plasma Physics, Garching, Germany
A different calibration procedure for the neutron counters with higher reproducibility and longer calibration time has been performed in ASDEX Upgrade. The main purpose was to check how strongly the calibration uncertainties influence the neutron rate measurement and thus add to the 'neutron deficit' in fusion plasmas.
Resolving the 'neutron deficit', i.e. the discrepancies between the experimental neutron counts and the theoretical calculations, is important for the systematic analysis of fast ion physics, as fast ions play a fundamental role in the plasma performance and pose challenges to the plasma facing components. The theoretical comparison is in progress and is performed with the Serpent code, developed at VTT Technical Research Centre of Finland.
Future goal of this work is to install a new neutron detector with higher time resolution, better statistics and less uncertainty, hence opening the space for fast ion physics investigation.